Kabbalah's description for the main human element.

I've been reading a Kabbalah book written by Yehuda Berg. "The power of Kabbalah" And it's basically explaining the universe and everything about it from the text of the zohar. And the Kaballah explains in the first few pages that Humans main core element Is Desire

and in the book it quotes "If man were to have no desire, he wouldn't twitch a single finger."
Which made me question just now to understand the word laziness and what the word implies. What is the word laziness supposed to implyh? If we were to have no desire we wouldn't twitch a single finger. Yet when the average person is lazy. They seem to have desire. So what does the word laziness imply?